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View Full Version : TC locked vs. unlocked... Which for increased mpg?



turboberserker
February 17th, 2006, 09:35 AM
I can't ever remeber this...

I *think* locked = better mileage for some reason.

joecar
February 17th, 2006, 01:50 PM
TCC locked (applied) = better MPG (no slip) and cooler ATF.
TCC unlocked (released) = torque increase and hotter ATF.

(torque converter multiplies torque when slipping, but also loses some power in form of heat).